Example xD

https://codepen.io/RAX7/pen/rNxOOzx

HTML

<section class="hero">
	<div class="before-bg"></div>
  <div class="hero__container">
    <h2 class="hero__title"><span class="hero__title-bg">Lorem ipsum dolor sit amet. Ab libero unde mollitia quidem adipisci!</span></h2>
    <div class="hero__desc"><span class="hero__title-bg">Ab libero unde mollitia quidem adipisci! Lorem ipsum dolor sit amet consectetur adipisicing elit.</span></div>

    <p class="hero__text">Lorem ipsum dolor sit, amet consectetur adipisicing elit. Fuga neque debitis impedit aut beatae. Repudiandae odio, doloremque est cumque, libero voluptas modi quas, iusto ducimus tempora praesentium facilis nesciunt quam!</p>
    <p class="hero__text">Lorem ipsum dolor sit, amet consectetur adipisicing elit. Fuga neque debitis impedit aut beatae. Repudiandae odio, doloremque est cumque, libero voluptas modi quas, iusto ducimus tempora praesentium facilis nesciunt quam!</p>
  </div>

SASS

*, *::before, *::after  
  box-sizing: border-box 
 

body  
  margin: 0 
 

.hero  
  z-index: 0 
  position: relative 
  overflow: hidden 
 

//.hero::before,
.hero::after, .hero .before-bg 
  content: "" 
  position: absolute 
  width: 100% 
  height: 100% 
  top: 0 
  z-index: -3
 

//.hero::before
.hero .before-bg 
  animation-name: slide
  animation-duration: 2s
  animation-timing-function: ease-in-out
  animation-iteration-count: infinite
  background-color: #dfdbe5 
  /*  https://www.heropatterns.com/  */
  background-image: url("data:image/svg+xml,%3Csvg width='180' height='180' viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M81.28 88H68.413l19.298 19.298L81.28 88zm2.107 0h13.226L90 107.838 83.387 88zm15.334 0h12.866l-19.298 19.298L98.72 88zm-32.927-2.207L73.586 78h32.827l.5.5 7.294 7.293L115.414 87l-24.707 24.707-.707.707L64.586 87l1.207-1.207zm2.62.207L74 80.414 79.586 86H68.414zm16 0L90 80.414 95.586 86H84.414zm16 0L106 80.414 111.586 86h-11.172zm-8-6h11.173L98 85.586 92.414 80zM82 85.586L87.586 80H76.414L82 85.586zM17.414 0L.707 16.707 0 17.414V0h17.414zM4.28 0L0 12.838V0h4.28zm10.306 0L2.288 12.298 6.388 0h8.198zM180 17.414L162.586 0H180v17.414zM165.414 0l12.298 12.298L173.612 0h-8.198zM180 12.838L175.72 0H180v12.838zM0 163h16.413l.5.5 7.294 7.293L25.414 172l-8 8H0v-17zm0 10h6.613l-2.334 7H0v-7zm14.586 7l7-7H8.72l-2.333 7h8.2zM0 165.414L5.586 171H0v-5.586zM10.414 171L16 165.414 21.586 171H10.414zm-8-6h11.172L8 170.586 2.414 165zM180 163h-16.413l-7.794 7.793-1.207 1.207 8 8H180v-17zm-14.586 17l-7-7h12.865l2.333 7h-8.2zM180 173h-6.613l2.334 7H180v-7zm-21.586-2l5.586-5.586 5.586 5.586h-11.172zM180 165.414L174.414 171H180v-5.586zm-8 5.172l5.586-5.586h-11.172l5.586 5.586zM152.933 25.653l1.414 1.414-33.94 33.942-1.416-1.416 33.943-33.94zm1.414 127.28l-1.414 1.414-33.942-33.94 1.416-1.416 33.94 33.943zm-127.28 1.414l-1.414-1.414 33.94-33.942 1.416 1.416-33.943 33.94zm-1.414-127.28l1.414-1.414 33.942 33.94-1.416 1.416-33.94-33.943zM0...